Beta Particles

A detailed Summary of Beta Particles

I will investigate how the field strength varies the deflection of Beta Particles.

I started my preliminary work because, when I started my measurements using 2 coils used in experiments to deflect electrons from and electron gun. While testing for the deflection of beta particles, I found that beta radiation was scattered in a very large cone, I can not get any readings with amount of beta radiation scattering.

So I would have to construct some type of shielding for this investigation, this is so I can measure the deflection more easily. The angle at which the beta particles are being scattered is 48o.

Deciding on the Type of Shielding

I will test for the best shielding. The best properties of the shield will be; it can be malleable to form different shapes and can be punctured, can stop radiation at a small thickness.

Different thickness of different metals

Clamps, bosses and clamp stand to hold the source and the material being tested.

1. Set-up equipment as in the diagram

2. Record the thickness and the material bein

I used callipers to measure the distance that the beta particles were deflected.

The graphs show a linear relationship between the puncture size and distance form AB. I would of expected an squared relation ships because as the diameter increases with a factor, the area would increase with 4 times that factor, so less beta particles would be stopped by the shielding. If I had more time to investigate this I would take more readings and examine the relationship.

If I re-arrange the equation to equal v:

6. Use the 10 second count, move the GM tube until there is a drop in the background count. Change to 100s and move the GM slightly until you just get a back group count.

v = The speed of the beta particle } Constant

I would liked to investigate the effect that a magnetic field has on a beta particle. If I use the shielding I have at the moment would provide some new problems in detecting the beta particles. The scattering would be hard to measure, because the magnetic coils do not contain the beta particles like the electric plates. I would have to use a different detector set-up.

The detector I would like to use, if I had more resources available, would be a radioactive sensitive film, because I would see the overall deflection of particles from the experiment and see repulsion force from the negative plate. Also I would be able to measure the distance and ant the deflection more accurately.

Some common words found in the essay are:
Vy21/2 Errors, Results Analysis, Equipment Strontium, Note GM, Compressive Shielding, Angle Theta, Tan-1 AB/D, Particles Preliminary, beta particles, Beta Using, Type Shielding, electric field, beta particle, angle beta, gm tube, deflection beta, angle beta particles, beta particles scattered, particles scattered, deflection beta particles, measure distance, cylindrical shielding, diagram equipment, diagram equipment strontium, equipment strontium 90,

Approximate Word count = 2131
Approximate Pages = 9 (250 words per page double spaced)

Category: Science

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